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3 years ago

5

in a test tube, there is 4 ML of oil and 6 ML of water. What volume percent of liquid in your test tube is oil? Show a ratio of

oil to water.

1 answer:

Nady [450]3 years ago

4 0

3:2, easy.

the rest you dont need to read i just need 20 characters to "explain it well".

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I accidentally clicked 4's answer (i dont know if it's right or not) so just forget that but do you guys know the answer to 4 an

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2 years ago

Train a is traveling at 30 mph faster than train b. If train a travels 350 miles in the same amount of time that train b travels

GalinKa [24]

Answer:

20 mph

Step-by-step explanation:

Let speed of Train a = Va mph

Let speed of Train b = Vb mph

Va = Vb + 30

Let time taken for Train a = Ta

Let time taken for Train b = Tb

time taken = distance travelled/speed

Ta = 350/Va = 350/(Vb+30)

Tb = 140/Vb

But they both travel in the same amount of time.

So, Ta = Tb

$\frac{350}{v_{b} + 30}=\frac{140}{v_{b}}$

Cross multiply

$350v_{b} = 140(v_{b} + 30)\\\\350v_{b} = 140v_{b} + 4200\\\\350v_{b} -140v_{b} = 4200\\\\210v_{b} = 4200$

Divide both sides by 210

$\frac{210v_{b} }{210} \frac{4200}{210} \\\\v_{b} = 20 mph$

4 0

2 years ago

The width of a rectangle measures (8x + 2) centimeters, and its length measures

Eddi Din [679]

Answer:

(28x+16)cm

Step-by-step explanation:

2(8x+2)+2(6x+6)

16x+4+12x+12

28x+16

4 0

3 years ago

Read 2 more answers

A video game store was getting rid of old games selling them 3 for $56.28 .if they sold 7 games how much money would they have m

Liula [17]

You divide 56.28 by 3 so 18.76 then multiply by 7 which is 131.32 hope this helps!

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2 years ago

What is the value of

Katen [24]

Answer:

6

Step-by-step explanation:

Since 3/4 has a different denominator then 1/8 we can multiply 3/4 by 2 to get 6/8 which has the same denominator. Now we just divide the numerators and denominators by each other to get 6.

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2 years ago